test: allow lightningNetworkWatcher to gracefully exit when ntfn pending
test: allow lightningNetworkWatcher to gracefully exit when ntfn pending

AndrewSamokhvalov/lnd,ddustin/lnd,ddustin/lnd,aakselrod/lnd,AndrewSamokhvalov/lnd,LightningNetwork/lnd,LightningNetwork/lnd,aakselrod/lnd